It starts at 100% in every world. Ordinance of Plentifulness (Ceres) gives +50% and Ordinance of The Wild (Diana) gives +50%.
Hostiles spawn rateDefault100%
Maximum1000%
Sources2
Ordinances
| Ordinance | God | Effect |
|---|---|---|
| Ordinance of Plentifulness | Ceres | +50% |
| Ordinance of The Wild | Diana | +50% |